20080433 Ver 1_More Info Received_20080509

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WITHERS RAVENEL
ENGINEERS I PLANNERS I SURVEYORS
111 MacKenan Drive
CARY, NORTH CAROLINA, 27511
[phone]
FAX [phone]
TO: ?X?- 17 VJQ
WE ARE SENDING YOU
? Shop Drawings
? Copy of Letter
? Attached via
? Prints
? Change order
LETTER OF MEMO TUTU&
DATE l Y? O ?Oo JOB NO. I O? O (?
ATTENTION 1 1 tin
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the following items:
? Plans ? Samples ? Specifications
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COPIES DATE NO. DESCRIPTION

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THESE ARE TRANSMITTED as checked below:
? For approval ? Approved as submitted
For your use ? Approved as noted
As requested ? Returned for corrections
? For review and comment ?
? FOR BIDS DUE 20 ? PRINTS
REMARKS: ?<'U`,c C'? \? ?• C-" ?? _.?Vkr-?'<-
? Resubmit copies for approval
? Submit copies for distribution
? Return corrected prints
RETURNED AFTER LOAN TO US
COPY TO: V\kc, SIGNED: ?f l xY NG1 ( T1?JC? f? ? r ` ?
If enclosures are not as noted, kindly notify us at once.

WITHERS
L1? RAV E N E L
ENGINEERS I PLANNERS I SURVEYORS
May 9, 2oo8
NC-Division of Water Quality
Attn: Ms. Cyndi Karoly
2321 Crabtree Blvd.
Raleigh, North Carolina 27604
Re: Request for Additional information - Bradford
W&R Project #: 02o61284.01
DWQ Project #: 08-0433
Dear Ms. Karoly,
MAY D
9 2008
WEIIAND OR WATER QUAUTf
ORMWATER BR4"
We received your request for additional information regarding the design of BMPs, level
spreaders, and wet detention pond discharges. I have included a brief response to your
request below. Please note that due to the addition of an extra level spreader/bypass
swale and additional grading for the roadway, the buffer impacts have increased slightly
since our initial submittal. The new totals (Zone 1:1,914 SF, Zone 2: 4,141 So are
detailed in the PCN form and, the revised EEP acceptance letter is included with the
attachments. Your letter asks for the following information:
1) The proposed BMPs must be designed to meet state requirements regardless of
whether the stormwater review is being conducted by the Town of Cary or the
DWQ. Please insure that the proposed BMPs include provisions for pretreatment,
flowpath lengths, 3:1 side slopes and other required design elements listed in the
DWQ BMP manual.
The BMPs have been redesigned as described in the BMP manual. Detail sheets
are included in the attachments forall of the required BMPstructures
2) Please address the following issues with the level spreader that is receiving flow
from BMP 1:
a) The following information must be provided on the plan sheets: Plan details
for the level spreader, a section view of the level spreader, details for high
flow bypass system, labeled one-foot topo lines between the level spreader
and the stream, and then proposed drainage easement boundaries.
As per your request, a revised set of stormwater plans is included with the
attachments.
b) The current location of the level spreader is directly in the fill slope for the
road. The level spreader must be relocated to a more level location.
The level spreader has been relocated to a more suitable location and the
revised maps are attached
iii MacKenan Drive i Cary, NC 27511 1 tel: [phone] fax: [phone]oo8 i www.withersravenel.com
7040 Wrightsville Avenue i Suite 1o1 i Wilmington, NC 28403 1 tel: [phone] fax: [phone]
Brunswick Surveying 1 1027 Sabbath Home Rd, SW i Supply, NC 28462 1 tel: [phone] fax: 91o.842.8o19
• Page 2
May 8, 2008
3) Wet detention ponds may only be discharged into existing conveyances if those
natural conveyances are adequate to handle the flows without any modifications
such as rip rap, turf reinforcement, regarding, etc. Please provide either
engineering justification that the existing conveyances can handle the new flows
or a properly designed level spreader at these locations. If you choose to provide
one or more level spreaders, then you must submit a completed Level Spreader
Supplement Form (with all required items) for each proposed level spreader.
A level spreader is now being proposed below BMP #2. To minimize impacts, we are
still using the existing conveyance as a bypass Swale but additional rip rap will be
needed and is called out as a butler impact on sheet A-1. Also included is the
executed Operation and Maintenance agreement and the level spreader supplement
forms.
Please feel free to call if you have questions or require additional information.
Sincerely,
WITHERS & RAVENEL, INC.

Todd Preuninger
Attachments:
1) Revised Site Plan with Impact Maps
2) Revised NC-EEP Mitigation Acceptance
3) 0 & M Agreement and Level Spreader Supplement Forms
4) DWQ request for additional information
Office Use Only: Form Version March 05
USACE Action ID No. DWQ No.
(If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A".)
1. Processing
1. Check all of the approval (s) requested for this project:
® Section 404 Permit ® Riparian or Watershed Buffer Rules
? Section 10 Permit ? Isolated Wetland Permit from DWQ
? 401 Water Quality Certification ? Express 401 Water Quality Certification
2. Nationwide, Regional or General Permit Number(s) Requested: NWP 12 & Buffer Compliance
3. If this notification is solely a courtesy copy because written approval for the 401 Certification
is not required, check here:
4. If payment into the North Carolina Ecosystem Enhancement Program (NCEEP) is proposed
for mitigation of impacts, attach the acceptance letter from NCEEP, complete section VIII,
and check here:
5. If your project is located in any of North Carolina's twenty coastal counties (listed on page
4), and the project is within a North Carolina Division of Coastal Management Area of
Environmental Concern (see the top of page 2 for further details), check here: ?
II. Applicant Information D 1 3 OwIR
1. Owner/Applicant Information MAY 9 2008
Name: Crosland, LLC Attention: Jeff Furman
Mailing Address: 4000 Westchase Blvd. Suite 390 DENN - WATER QUAU7Y
Raleigh, NC 27607 BRANCH
Telephone Number: 919-754-8990 Fax Number: 919-754-8995
E-mail Address: Jfurman(a,crosland.com
2. Agent/Consultant Information (A signed and dated copy of the Agent Authorization letter
must be attached if the Agent has signatory authority for the owner/applicant.)
Name: Todd Preuninger
Company Affiliation: Withers & Ravenel
Mailing Address: 111 Mackenan Drive
Cary, NC 27511
Telephone Number: 919-469-3340 Fax Number: 919-535-4545
E-mail Address: [e-mail]
III. Project Information
Attach a vicinity map clearly showing the location of the property with respect to local
landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property
Page I of 9
boundaries and development plans in relation to surrounding properties. Both the vicinity map
and site plan must include a scale and north arrow. The specific footprints of all buildings,
impervious surfaces, or other facilities must be included. If possible, the maps and plans should
include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property
boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion,
so long as the property is clearly defined. For administrative and distribution purposes, the
USACE requires information to be submitted on sheets no larger than 11 by 17-inch format;
however, DWQ may accept paperwork of any size. DWQ prefers full-size construction
drawings rather than a sequential sheet version of the full-size plans. If full-size plans are
reduced to a small scale such that the final version is illegible, the applicant will be informed that
the project has been placed on hold until decipherable maps are provided.
1. Name of project: Bradford
2. T.I.P. Project Number or State Project Number (NCDOT Only): NA
3. Property Identification Number (Tax PIN): 0744-54-6545
4. Location
County: Wake Nearest Town: Cary
Subdivision name (include phase/lot number): Bradford
Directions to site (include road numbers/names, landmarks, etc.): The site is located
northeast of the intersection of Davis Drive (SRI 613 and High House Rd (SR 1615) in Car,
5. Site coordinates (For linear projects, such as a road or utility line, attach a sheet that
separately lists the coordinates for each crossing of a distinct waterbody.)
Decimal Degrees (6 digits minimum): 35.7950724 ON 78.8465335 °W
6. Property size (acres): 41.84
7. Name of nearest receiving body of water: Turkey Creek
8. River Basin: Neuse River Basin
(Note - this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at http://h2o.enr.state.nc.us/admin/maps/.)
9. Describe the existing conditions on the site and general land use in the vicinity of the project
at the time of this application: The site is approximately 40% wooded and 60% open space
(i.e. fescue). To the north and west is a residential subdivision and to the south is farmland.
10. Describe the overall project in detail, including the type of equipment to be used: This
project includes the development of 41.84 acres into a mixed use residential communitL.
This development includes the installation of a sanitary sewer line which will service this
new community. It also includes the construction of a Town of Cary collector road. Large
Page 2 of 9
grading equipment (i.e. bulldozer and track hoe) will be used to install the sanitary sewer line
and perform the grading of the residential community and collector road.
11. Explain the purpose of the proposed work: The purpose of this work is to provide mixed
use residential housing to meet the local housing demand and improve safety at the
intersection of High House Road and Davis Drive.
IV. Prior Project History
If jurisdictional determinations and/or permits have been requested and/or obtained for this
project (including all prior phases of the same subdivision) in the past, please explain. Include
the USACE Action ID Number, DWQ Project Number, application date, and date permits and
certifications were issued or withdrawn. Provide photocopies of previously issued permits,
certifications or other useful information. Describe previously approved wetland, stream and
buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project,
list and describe permits issued for prior segments of the same T.I.P. project, along with
construction schedules. Wetlands were delineated by Triogy n Engineering Consultant, Inc during
December 2005. Site meetings were conducted with the Eric Kulz of the NC-DWQ on August
12, 2005 (DWQ NBRRO 05-220) and Thomas Brown of the U.S. Army Corp of Engineers on
June 27, 2006 (AID: SAW-2006-32870-292) to confirm the wetland delineation and stream
buffer determination.
V. Future Project Plans
Are any future permit requests anticipated for this project? If so, describe the anticipated work,
and provide justification for the exclusion of this work from the current application.
This is a single and complete project with no additional phases anticipated at this time.
VI. Proposed Impacts to Waters of the United States/Waters of the State
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
wetlands, open water, and stream channels associated with the project. Each impact must be
listed separately in the tables below (e.g., culvert installation should be listed separately from
riprap dissipater pads). Be sure to indicate if an impact is temporary. All proposed impacts,
permanent and temporary, must be listed, and must be labeled and clearly identifiable on an
accompanying site plan. All wetlands and waters, and all streams (intermittent and perennial)
should be shown on a delineation map, whether or not impacts are proposed to these systems.
Wetland and stream evaluation and delineation forms should be included as appropriate.
Photographs may be included at the applicant's discretion. If this proposed impact is strictly for
wetland or stream mitigation, list and describe the impact in Section VIII below. If additional
space is needed for listing or description, please attach a separate sheet.
1. Provide a written description of the proposed impacts: The proposed permanent
impacts consist of 6,055 SF of riparian buffer for the construction of a collector road and a
BMP outfall. Temporary impacts include 79 SF of emergent wetlands for the installation of
a utility line.
Page 3 of 9
2. Individually list wetland impacts. Types of impacts include, but are not limited to
mechanized clearing, grading, fill, excavation, flooding, ditching/drainage, etc. For dams,
separately list impacts due to both structure and flooding.
Wetland Impact Type of Wetland Located within Distance to Area of
Site Number Type of Impact (e.g., forested, marsh, 100-year Nearest Impact

(indicate on map)
herbaceous, bog, etc.) Floodplain Stream (acres)
(yes/no) (linear feet)
Impact Sheet C Temporary Herbaceous No 100 ft 0.001
Total Wetland Impact (acres) 0.001
3. List the total acreage (estimated) of all existing wetlands on the property: < 1 acre
4. Individually list all intermittent and perennial stream impacts. Be sure to identify temporary
impacts. Stream impacts include, but are not limited to placement of fill or culverts, dam
construction, flooding, relocation, stabilization activities (e.g., cement walls, rip-rap, crib
walls, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is proposed,
plans and profiles showing the linear footprint for both the original and relocated streams
must be included. To calculate acreage. multiDly length X width. then divide by 43.560_
Stream Impact Perennial or Average Impact Area of
Number Stream Name Type of Impact Intermittent? Stream Width Length Impact
(indicate on ma) Before Impact (linear feet) (acres)
NA NA NA NA NA NA NA
Total Stream Impact (by length and acreage) NA NA
5. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic
Ocean and any other water of the U.S.). Open water impacts include, but are not limited to
fill- excavation. dredging- flooding- drainage- bulkheads- etc_
Open Water Impact Name of Waterbody Type of Waterbody Area of
Site Number (if applicable) Type of Impact (lake, pond, estuary, sound, bay, Impact
(indicate on ma) ocean, etc.) (acres)
NA NA NA NA NA
Total Open Water Impact (acres) NA
6. List the cumulative impact to all Waters of the I I_S_ resulting from the nmiect-
Stream Impact (acres): NA
Wetland Impact (acres): 0.001
Open Water Impact (acres): NA
Total Impact to Waters of the U.S. (acres) 0.001
Total Stream Impact (linear feet): NA
7. Isolated Waters
Do any isolated waters exist on the property? ? Yes ® No
Describe all impacts to isolated waters, and include the type of water (wetland or stream) and
the size of the proposed impact (acres or linear feet). Please note that this section only
applies to waters that have specifically been determined to be isolated by the USACE.
Page 4 of 9
8. Pond Creation
If construction of a pond is proposed, associated wetland and stream impacts should be
included above in the wetland and stream impact sections. Also, the proposed pond should
be described here and illustrated on any maps included with this application.
Pond to be created in (check all that apply): ? uplands ? stream ? wetlands
Describe the method of construction (e.g., dam/embankment, excavation, installation of
draw-down valve or spillway, etc.): NA
Proposed use or purpose of pond (e.g., livestock
local stormwater requirement, etc.): NA
Current land use in the vicinity of the pond: NA
Size of watershed draining to pond: NA
VII. Impact Justification (Avoidance and Minimization)
Expected pond surface area: NA
Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide
information related to site constraints such as topography, building ordinances, accessibility, and
financial viability of the project. The applicant may attach drawings of alternative, lower-impact
site layouts, and explain why these design options were not feasible. Also discuss how impacts
were minimized once the desired site plan was developed. If applicable, discuss construction
techniques to be followed during construction to reduce impacts. Prior to site plan
development the applicant requested that a detailed wetland delineation be conducted so that
impacts to wetlands and `waters' could be minimized. During the planning and design of this
mixed-use development the Town of Carn Engineering staff directed the applicant that a
collector road must be constructed on the perimeter of the project and that it must align with the
Riggsbee Farm Drive (see attached site vicinity map for road locations). One purpose of this
road is to alleviate congestion and improve safety at the intersection of High House Road and
Davis Drive. As a result of this request, impacts to the buffers along the UT to Turkey Creek
were unavoidable. The impacts to the buffer have been minimized to the maximum extent by
reducing the intersection angle to 80 degrees which is the minimum desirable intersection angle
as stated in the "Town of Cm Standard Specifications and Details." Additionally, the stream
buffer impacts have been minimized by deflecting the roadway away from the stream buffer at
the closest feasible point while maintaining the Town of Cary's minimum tangent length
requirements for the stop approach to an intersection.
The temporary wetland impacts associated with the installation of the sewer are unavoidable due
topographic constraints. Because this is such a small impact, it was not economically feasible to
utilize directional drilling in this location. Following construction, the wetlands will be re-
seeded and returned to pre-construction contours.
VIII. Mitigation
DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC
Division of Water Quality for projects involving greater than or equal to one acre of impacts to
freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial
streams.
watering, irrigation, aesthetic, trout pond,
Page 5 of 9
USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on January 15, 2002, mitigation will be required when
necessary to ensure that adverse effects to the aquatic environment are minimal. Factors
including size and type of proposed impact and function and relative value of the impacted
aquatic resource will be considered in determining acceptability of appropriate and practicable
mitigation as proposed. Examples of mitigation that may be appropriate and practicable include,
but are not limited to: reducing the size of the project; establishing and maintaining wetland
and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of
aquatic resource functions and values by creating, restoring, enhancing, or preserving similar
functions and values, preferable in the same watershed.
If mitigation is required for this project, a copy of the mitigation plan must be attached in order
for USACE or DWQ to consider the application complete for processing. Any application
lacking a required mitigation plan or NCEEP concurrence shall be placed on hold as incomplete.
An applicant may also choose to review the current guidelines for stream restoration in DWQ's
Draft Technical Guide for Stream Work in North Carolina, available at
http://h2o.enr.state.iic.us/ncwetlands/strmgide.litml.
1. Provide a brief description of the proposed mitigation plan. The description should provide
as much information as possible, including, but not limited to: site location (attach directions
and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet)
of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view,
preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
The applicant proposes payment to NC-EEP to satisfy the mitigation requirements for the
impacts associated with the installation of the collector road. A copy of the NC-EEP
acceptance letter is attached. Following installation of the sewer line, the applicant will return
the wetland to pre-construction contours and re-seed the area with a wetland seed mix.
Because the wetlands are not currently forested (i.e. they are herbaceous), and because the
impacts are temporary,,tthe applicant is not proposing mitigation for these impacts
2. Mitigation may also be made by payment into the North Carolina Ecosystem Enhancement
Program (NCEEP). Please note it is the applicant's responsibility to contact the NCEEP at
[phone] to determine availability, and written approval from the NCEEP indicating
that they are will to accept payment for the mitigation must be attached to this form. For
additional information regarding the application process for the NCEEP, check the NCEEP
website at http://h2o.enr.state.nc.us/wrp/index.htm. If use of the NCEEP is proposed, please
check the appropriate box on page five and provide the following information:
Amount of stream mitigation requested (linear feet): NA
Amount of buffer mitigation requested (square feet): 6,241 SF
Amount of Riparian wetland mitigation requested (acres): NA
Amount of Non-riparian wetland mitigation requested (acres): NA
Amount of Coastal wetland mitigation requested (acres): NA
Page 6 of 9
IX. Environmental Documentation (required by DWQ)
1. Does the project involve an expenditure of public (federal/state/local) funds or the use of
public (federal/state) land? Yes ? No
2. If yes, does the project require preparation of an environmental document pursuant to the
requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)?
Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA
coordinator at [phone] to review current thresholds for environmental documentation.
Yes ? No
3. If yes, has the document review been finalized by the State Clearinghouse? If so, please
attach a copy of the NEPA or SEPA final approval letter. Yes ? No
X. Proposed Impacts on Riparian and Watershed Buffers (required by DWQ)
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
required state and local buffers associated with the project. The applicant must also provide
justification for these impacts in Section VII above. All proposed impacts must be listed herein,
and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a
map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ
Regional Office may be included as appropriate. Photographs may also be included at the
applicant's discretion.
1. Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233
(Neuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 02B .0243 (Catawba) 15A NCAC
2B .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please
identify )? Yes ® No ?
2. If "yes", identify the square feet and acreage of impact to each zone of the riparian buffers.
If buffer mitigation is required calculate the required amount of mitigation by applying the
buffer multipliers.
Road Impacts:
Zone* Impact
(square feet) Multiplier Required
Mitigation
1 410 SF 3 (2 for Catawba) 1,230 SF
2 3,341 SF 1.5 5,011 SF
Total 3,751 6,241 SF
BMP Outfall Impacts:
Zone* Impact Multiplier Required
(square feet) Mitigation
1 1,504 SF 3 (2 for Catawba) NA
Page 7 of 9
2 800 SF 1.5 NA
Total 2,304 NA
Total Impacts to the Buffer are 6,055 SF : Zone 1: 1,914, Zone 2: 4,141
* Zone 1 extends out 30 feet perpendicular from the top of the near bank of channel; Zone 2 extends an
additional 20 feet from the edge of Zone 1.
3. If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e.,
Donation of Property, Riparian Buffer Restoration / Enhancement, or Payment into the
Riparian Buffer Restoration Fund). Please attach all appropriate information as identified
within 15A NCAC 213.0242 or.0244, or.0260. The applicant proposes payment to NC-EEP
to satisfy the mitigation requirements for buffer impacts associated with the collector road.
NC-EEP acceptance letter is attached
XI. Stormwater (required by DWQ)
Describe impervious acreage (existing and proposed) versus total acreage on the site. Discuss
stormwater controls proposed in order to protect surface waters and wetlands downstream from
the property. If percent impervious surface exceeds 20%, please provide calculations
demonstrating total proposed impervious level. The proposed impervious for this project is
expected to be approximately 60% Because 401-Certification is not required for this project, we
do not believe that a pre-approved stormwater management plan is required. The applicant will
comply with the Neuse Buffer Rules by providing diffuse flow through the buffers. A copy of
the stormwater plan including level spreader details is included with the attachments. Please
note that two of the proposed ponds will discharge into an existing conveyance and therefore,
will not require level spreaders The stormwater plans area currently under review by the Town
of Cary Once the plans are approved copies of the plans and approval letter will be forwarded
to your office During construction the applicant will utilize BMP devices to prevent sediment
from entering jurisdictional stream channels or wetlands.
XII. Sewage Disposal (required by DWQ)
Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of
wastewater generated from the proposed project, or available capacity of the subject facility.
Sanitary Sewer
XIII. Violations (required by DWQ)
Is this site in violation of DWQ Wetland Rules (15A NCAC 2H .0500) or any Buffer Rules?
Yes ? No
Is this an after-the-fact permit application? Yes ? No
XIV. Cumulative Impacts (required by DWQ)
Page 8 of 9
Will this project (based on past and reasonably anticipated future impacts) result in additional
development, which could impact nearby downstream water quality? Yes ? No
If yes, please submit a qualitative or quantitative cumulative impact analysis in accordance with
the most recent North Carolina Division of Water Quality policy posted on our website at
http://h2o.enr.state.nc.us/ncwetlands. If no, please provide a short narrative description: The
proposed project will be required to comply with the Phase II stormwater regulations as well as
the Neuse Buffer rules, and will maintain a 100-foot riparian buffer, therefore, we do not believe
that the development of this tract will have a negative impact on downstream water quality.
Moreover, this is a single and complete project that consists of a mixture of residential of
commercial buildings, and will not lead to additional development.
XV. Other Circumstances (Optional):
It is the applicant's responsibility to submit the application sufficiently in advance of desired
construction dates to allow processing time for these permits. However, an applicant may
choose to list constraints associated with construction or sequencing that may impose limits on
work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and
Threatened Species, accessibility problems, or other issues outside of the applicant's control).

Applicant/Agent's Signature DVte
(Agent's signature is valid only if an authorization letter from the applicant is provided.)
Page 9 of 9
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IMPACT SUMMARY TABLE
IMPACT IMPACT TYPE / DESCRIPTION IMPACT AREA
Al BUFFER (ZONE 1) / ROADWAY 410 SF
A2 BUFFER (ZONE 2) / ROADWAY 3341 SF
A3 BUFFER (ZONE 1) / BMP OUTFALL 781 SF
A4 BUFFER (ZONE 2) / BMP OUTFALL 399 SF
B1 BUFFER (ZONE 1) / BMP OUTFALL 723 SF
B2 BUFFER (ZONE 2) / BMP OUTFALL 401 SF
TEMPORARY IMPACT SUMMARY TABLE
IMPACT IMPACT TYPE / DESCRIPTION IMPACT AREA
Cl WETLAND / OFF-SITE SEWER 77 SF
SITE DATA TABLE
PROJECT NAME BRADFORD
LOCATION DAVIS DRIVE & HIGH HOUSE ROAD (CARY)
ADDRESS 2424 DAVIS DRIVE
PROJECT DESCRIPTION MIXED USE (COMMERCIAL, OFFICE, RESIDENTIAL)
TOTAL AREA ±41.84 ACRES
IMPERVIOUS AREA (%) ±25 ACRES (60%)
WAKE COUNTY PIN 0744-54-6545

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GRAPHIC SCALE
200 0 100 200 400
1 inch = 200 ft.
No. Revi.ion Date B on?,, swaaM? 1. ,'.>a BRADFORD IMPACT EXHIBIT WITHERS &- RAVENEL 1.0
wo w m ENGINEERS 1 PLANNERS 1 SURVEYORS
zas,?a el CARY WAKE COUNTY NORTH CAROLINA O1i
BRADFORD II IMPACT MAPA-1 I WITHERS &- RAVENEL
ENGINEERS 1 PLANNERS 1 SURVEYORS
URY WAKE COUNTY NORTH CARIXINA
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6' DIP FROM FLOW BYPASS STRUCTURE
(SEE IMPACT MAP A-1 FOR FLOW BYPASS
STRUCTURE LOCATION)
SEE IMPACT MAP A-3 FOREBAY/LEVEL
FOREBAY --
,
NOTE: FOREBAY TO BE INSTALLED AFTER
COMPLETION OF GRADING AND RETAINING
WALLS. AND AFTER CONVERSION OF BMP
FROM EROSION CONTROL DEVICE TO WET
POND.
SPREADER DETAIL GRAPHIC SCALE
50 0 25 50 loo
1 inch = 50 ft.
F-4
O
z
II BRADFORD III IMPACT MAP A-2 III WITHERS &- RAVENEL ENO I)
INEENt 1 ?LANNEtt 1 SURVEYORS
NORTH CAROLINA
NOTE:
6" DIP SHALL BE CAPPED UNTIL AFTER
ENTRY FEATURE IS CONVERTED FROM
EROSION CONTROL DEVICE TO WET POND
'O-RWC' CASKEIED
CLASS III RCP
24' DIAMETER
FLOW FROM ENTRY FEATURE

WEIR WALL
ISEE
'O-RINC' CASKETEDJ _J
CLASS NI RCP 6' DIP TO
42' DIAMETER EvEL SPREADER
FLOW FROM IMP 12 (SEE NOTE)
SPLITTER BOX (JB 431) PLAN VIEW
(FLOW BYPASS STRUCTURE)
NTS
PIPE FROM BYPASS STRUCTURE
-RING" GASKETED
CLASS III RCP
42' DIAMETER
FLOW FROM BMP 12
54' I.D. JUNCTION BOX
'O-RING' GASKETED
CLASS 111 RCP
24' DIAMETER
FLOW FROM ENTRY FEATURE
I
I
I
6' DIP TO 1
LEVEL SPREADER
(SEE NOTE) 1
_ I
i? WEIR WALL
j
/ (8' WIDTH) I
f 1 I
1 1 I
1 / I
12' 1
I
I
I
'O-RING' GASKETED CLASS III
42' DIAMETER
I
I
I
1 TO STREAM
1
I
1
I

3'
SPLITTER BOX (JB 431) SECTION
(FLOW BYPASS STRUCTURE)
NTS
'0-RING' GASKETED
CLASS IN RCP
42' DIAMETER
TO STREAM
24' CURB do GUTTER (3,000
PSI MIN COMPRESSIVE
STRENGTH)
D.DO% SLOPE ON TOP OF
GUTTER (FLAT SLOPE)
SEE PLAN FOR LEVEL
SPREADER LENGTH
LEVEL SPREADER LIP ELEVATION.
4'-6' HIGHER EXISTING SLOPE ON
DOWNSTREAM SIDE
DIFFUSED FLOW
THROUGH BUFFER
3'-0'
INSTALL CLASS B RIP RAP
FROM OUTLET TO BOTTOM
OF FOREBAY 18" MIN
DEPTH, 3' WIDE WITH
GEOTEXTILE LINER
NOTE: FOREBAY TO BE INSTALLED AFTER COMPLETION OF
GRADING Ac RETAINING WALLS AND AFTER CONVERSION OF
BMP FROM EROSION CONTROL DEVICE TO WET POND.
L-#57 WASHED STONE -
COMPACTED
COMPA 4' THICK (MIN)
SUBGRAIDE PERMAMENT GEOTEXTILE
UNDERLINER
FL W FROM DRAWDOWN ORFlCEDUE TO LW TYPICAL FOREBAY/LEVEL SPREADER DETAIL
NTS
BRADFORD
IMPACT MAP A-3 III WITHERS &' RAVENEL
ENGINEERS I PLANNERS I SURVEYORS
NORTH

t ?
rt
1
J
i
I
,-IMPACT B1
723 SF-ZONE 1
r

II
I
II
15' LEVEL SPREADER
NOTE: FOREBAY TO BE INSTALLED AFTER SEE IMPACT MAP B-2 FOREBAY/LEVEL
COMPLETION OF GRADING AND RETAINING SPREADER DETAIL
WALLS. AND AFTER CONVERSION OF BMP
FROM EROSION CONTROL DEVICE TO WET
POND.
GRAPHIC SCALE x
50 0 25 50 100 F+
O
1 inch = 50 ft. Z
BRADFORD
IMPACT MAP B-1 III WITHERS &- RAVENEL
ENGINEERS 1 PLANNERS 1 SURVEYORS
PACT B2
401,,S 7ZONE 2
`DRAINAGE EASEMENT
FOREB Y?
DRAINAGE EASEMENT\

NOTE: FOREBAY TO BE INSTALLED AFTER COMPLETION OF
GRADING R RETAINING WALLS AND AFTER CONVERSION OF
SNIP FROM EROSION CONTROL DEVICE TO WET POND.
PIPE FROM RISER DRAWDOWN
3'
24' CURB & GUTTER (3.000
PSI MIN COMPRESSIVE
STRENGTH)
0.00% SLOPE ON TOP OF
GUTTER (FLAT SLOPE)
SEE PLAN FOR LEVEL
SPREADER LENGTH
LEVEL SPREADER LIP ELEVATION=
F4 *-6* HIGHER EXISTING SLOPE ON
DOWNSTREAM SIDE
DIFFUSED FLOW
THROUGH BUFFER
3'-0'
INSTALL CLASS B RIP RAP.
78' MIN DEPTH. 3' WIDE
WITH GEOTEXTILE LINER
NOTE: FOREBAY NOT REOUIRED DUE TO LOW
FLOW FROM DRAWDOWN ORIFICE
BRADFORD
L'#57 WASHED STONE -
COMPACTED
SUBGRADE 4' THICK (MIN)
PERMAMENT GEOTEXTILE
UNDERLINER
TYPICAL FOREBAY/LEVEL SPREADER DETAIL
NTS
IMPACT MAP B-2 III WITHERS &- RAVENEL
ENGINEERS I PLANNERS 1 SURVEYORS
NORTH
INTERMITTENT STREAM
DWO BUFFER DETERMINATION
NBRRO 05-220
NOT SUBJECT

?l ?J \
SF
SANITARY SEWER \ \
EASEMENT ss \ \
\ LINEAR \
TEMPORARY IMPACT Cl v WETLAND \
77 SF-WETLAND
EPHEMERAL STREAM W ss \
(NON-JURISDICTIONAL)
US ARMY CORPS OF ENGINEERS
JURISDICTIONAL DETERMINATION ss
SAW-2006-32870-292 \
WETLAND
US ARMY CORPS OF ENGINEERS
JURISDICTIONAL DETERMINATION
SAW-2006-32870-292
AREA: 0.025 ACRES (1087 SF)
GRAPHIC SCALE
50 0 25 50 100
1 inch = 50 ft.
a
i
Z
BRADFORD
F,
0
z
IMPACT MAP C-1 III WITHERS &- RAVENEL
9461M6E02 1 .IANNERf 1 fYtY[V962
?Ut µl.A1fiR
, Q
NCDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT
This form must be completely filled out, printed and submitted.
DO NOT FORGET TO ATTACH THE REQUIRED ITEMS CHECKLIST AND ALL REQUIRED ITEMS (NEXT WORKSHEET)l
!, PROJECT INFORMATION
Project name Bradford
Contact name Hunter Freeman
Phone number 919469-3340
Date
Drainage area number
For Level Spreaders Receiving Flow From a BMP
Type of BMP
Drawdown flow from the BMP
For Level Spreaders Receiving Flow from the Drainage Area
Drainage area
Impervious surface area
Percent impervious
Rational C coefficient
Peak flow from the 1 in/hr storm
Time of concentration
Rainfall intensity, 10-yr storm
Peak flow from the 10-yr storm
Where Does the Level Spreader Discharge?
To a grassed bioretention cell?
To a mulched bioretention cell?
To a wetland?
To a filter strip or riparian buffer?
Other (specify)
Filter Strip or Riparian Buffer Characterization (if applicable)
Width of grass
Width of dense ground cover
Width of wooded vegetation
Total width
Elevation at downslope base of level lip
Elevation at top of bank of the receiving water
Slope (from level lip to to top of bank)
Are any draws present?
Level Spreader Design
Forebay surface area
Feet of level lip needed per cfs
Answer 'Y' to one of the following:
Length based on the 1 in/hr storm?
Length based on the 10-yr storm?
Length based on the BMP discharge rate?
Design flow
Is a bypass device provided?
April 24, 2008
2
Wet Pond
0.42 cfs
ft2
ftz
cis
min
inthr
cfs
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
n (Y or N)
n (Y or N)
n (Y or N)
y (Y or N) Complete filter strip characterization below.
20.00 ft
50.00 ft
30.00 ft
100.00 ft
332.00 fmsl
328.00 fmsl
4.00 % OK
n (Y or N) OK
50.00 sq It No forebay is needed.
29 f /cfs
n (Y or N)
n (Y or N)
y (Y or N)
0.42 cis
y (Y or N) OK
Form SW,101-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev 4 Parts I and II. Design Summary, page 1 of 2

t

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,

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Y
m.L
E a
icem
PROGRAM
Jeff Furman
Crosland, LLC
4000 Westchase Blvd., Ste 390
Raleigh, NC 27607
Project: Bradford
County: Wake
The purpose of this letter is to notify you that the North Carolina Ecosystem Enhancement Program (NCEEP) is willing to accept
payment for impacts associated with the above referenced project. Please note that this decision does not assure that the payment will
be approved by the permit issuing agencies as mitigation for project impacts. It is the responsibility of the applicant to contact these
agencies to determine if payment to the NCEEP will be approved.
This acceptance is valid for six months from the date of this letter and is not transferable. If we have not received a copy of the
issued 404 Permit/401 Certification/LAMA permit within this time frame, this acceptance will expire. It is the applicant's
responsibility to send copies of the permits to NCEEP. Once NCEEP receives a copy of the permit(s) an invoice will be issued based
on the required mitigation in that permit and payment must be made prior to conducting the authorized work. The amount of the In
Lieu Fee to be paid to NCEEP by an applicant is calculated based upon the Fee Schedule and policies listed at www.nceep.net.
Based on the information supplied by you the impacts that may require compensatory mitigation are summarized in the following
table.
River
Basin CU
Location Stream (feet) Wetlands (acres) Buffer I
(Sq. Ft.) Buffer II
(Sq. Ft.}
Cold Coot Warm Riparian Non-Riparian Coastal Marsh
Impacts Neuse 03020201 0 0 0 0 0 0 410 3341
Credits Neuse 03020201 0 0 0 0 0 0 1,230 5011.50
Upon receipt of payment, EEP will take responsibility for providing the compensatory mitigation. If the regulatory agencies require
mitigation credits greater than indicated above, and the applicant wants NCEEP to be responsible for the additional mitigation, the
applicant will need to submit a mitigation request to NCEEP for approval prior to permit issuance. The mitigation will be performed
in accordance with the Memorandum of Understanding between the N. C. Department of Environment and Natural Resources and the
U. S. Army Corps of Engineers dated November 4, 1998.
If you have any questions or need additional information, please contact Valerie Mitchener at [phone].
Sincerely,
Q?? "V
William D. Gilmore, PE
Director
cc: Cyndi Karoly, NCDWQ Wetlands/401 Unit
Jamie Shern, USACE-Raleigh
Ian McMillan, NCDWQ-Wetlands/401 Unit
Todd Preuninger, agent
File
R.estoYU,!,... P ... Prroteaofg our .matt.
May 6, 2008
Expiration of Acceptance: November 6, 2008
_AMA
IMENR
North Carolina Ecosystem Enhancement Program, 1652 Mail Service Center, Raleigh, NC 27699-1652 / 919-715-0476 / www.nr-eep.net
OWAT
"1 ?R0 Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
U-L ` Coleen 1-1. Sullins, Director
` - Division of Water Quality
April 18, 2008
CERTIFIED MAIL: RETURN RECEIPT REQUESTED
DWQ Project # 08-0433
Wake County
Mr. Jeff Furman RECEIVED APR 212000
Crosland, LLC
4000 Westchase Boulevard, Suite 390
Raleigh, NC 27607
Subject Property: Bradford
Ut to Turkey Creek [030402, 27-33-2, C, NSW]
REQUEST FOR MORE INFORMATION
Dear Sir or Madam:
On March 7, 2008, the Division of Water Quality (DWQ) received your application dated March
7, 2008, to fill or otherwise impact 0.001 acres of 404/wetland and 979 square feet of Zone I
Neuse River basin protected riparian buffers, and 3,341 square feet of Zone 2 Neuse River basin
protected riparian buffers to construct the proposed residential development. The DWQ has
determined that your application was incomplete and/or provided inaccurate information as
discussed below. The DWQ will require additional information in order to process your
application to impact protected wetlands and/or streams on the subject property. Therefore,
unless we receive five copies of the additional information requested below, we will have to
move toward denial of your application as required by 15A NCAC 2N .0506 and will place this
project on hold as incomplete until we receive this additional information. Please provide the
following information so that we may continue to review your project.
Additional Information Requested:
1. The proposed BMPs must be designed to meet state requirements regardless of whether
the stormwater review is being conducted by the Town or Cary or the DWQ. Please
insure that the proposed BMPs include provisions for pretreatment, flowpath lengths, 3:1
side slopes and other required design elements listed in the DWQ BMP Manual.
2. Please address the following issues with the level spreader that is receiving flow from
BMP 1:
a) The following information must be provided on the plan sheets: plan details
for the level spreader, a section view of the level spreader, details for the high
NO thCarolma
401 Oversight/Express Review Permitting Unit r?lirrnll?
1650 Mail Service Center, Raleigh, North Carolina 27699-1650
2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604
Phone: [phone] / FAX [phone] Internet: http://l12o,enr.state.nc.us/ncxvetlands
An Equal Opportunity/AffrrmativeAction Employer - 50%d Recycled/10%o Post Consumer Paper
Crosland, LLC
Page 2 of 2
April 18, 2008
flow bypass system, labeled one-foot topo lines between the level spreader
and the stream, and the proposed drainage easement boundaries.
b) The current location of the level spreader is directly in the fill slope for the
road. The level spreader must be relocated to a more level location.
3. Wet detention ponds may only be discharged into existing natural conveyances if those
natural conveyances are adequate to handle the flows without any modifications such as
riprap, turf reinforcement, regrading, etc. Please provide either engineering justification
that the existing conveyances can handle the new flows or a properly designed level
spreader at these locations. If you choose to provide one or ore level spreaders, then you
must submit a completed Level Spreader Supplement Form (with all required items) for
each proposed level spreader.
Please submit this information within 30 calendar days of the date of this letter. If we do not
receive this requested information within 30 calendar days of the date of this letter, your project
will be withdrawn and you will need to reapply with a new application and a new fee.
This letter only addresses the application review and does not authorize any impacts to wetlands,
waters or protected buffers. Please be aware that any impacts requested within your application
are not authorized (at this time) by the DWQ. Please call Ms. Cyndi Karoly or Mr. Ian
McMillan at 919-733-1786 if you have any questions regarding or would like to set up a meeting
to discuss this matter.
S' ce ely,
M
Cyndi Karoly, Supervisor
V 401 Oversight/Express Review Permitting Unit
C13K/ynl
r
cc: Lauren Witherspoon, DWQ Raleigh Regional Office
USACE Raleigh Regulatory Field Office
File Copy
Central Files
Todd Preuninger, Withers & Ravenel, 111 MacKenan Drive, Cary, NC 27511
Filename: 080133Bradford (wake)On_Flold